sysstat 11.2.14 等四個版本釋出,11.2.x 生命週期結束

類別: IT

今日,我們發現 sysstat 為其四個分支都發布了新版本,分別是 v11.2.14、v11.4.8、v11.6.2 和 v11.7.1。其中穩定版 v11.2.14 是 11.2.x 系列的最後一個版本,它的生命週期已結束。剩下的穩定版本只有 v11.4.8 和 v11.6.2,而 v11.7.1 則屬於開發版,不適合用於生產環境。

穩定版本僅包含 sysstat 11.7.1 中新增的錯誤修復,沒有新功能。

v11.7.1 包含有關 sar 的二進位制資料檔案格式以及 sar 如何工作的重大更改,其中:

  • A binary data file should take much less space on disk thanks to new optimizations on how values are stowed in memory. The space saved is estimated at least at 25% compared to previous format.

  • Structures are no longer statically allocated, meaning that the system can now register as many new devices (disks, network interfaces, etc.) as needed and you will find all of them saved in your saXX data file (provided that you have selected the corresponding activities to collect). Previous version could lead to some devices being ignored and going unnoticed if no free structures were left.

  • Sar (and sadf) will now be able to read a binary data file whatever its endianness is: Both big-endian and little-endian files can be read by the same sar or sadf executable.

  • More flexibility has been added to sar’s binary data file format. I cannot promise that the format won’t change again in the future but it should now be possible to add new metrics or activities without making the format unreadable by older sar versions (starting with version 11.7.1). Older versions will be able to read newer formats but will display only the metrics they currently know.

注意:由 sadf(引數 -c)提供的將舊資料檔案轉換為最新格式的功能已被暫時禁止,這個函式將在下一個 sysstat 版本(11.7.2)中再次啟用。


SYSSTAT 是用於 Linux 的效能監視工具合集,包含監測系統效能及效率的一組工具,如 sar、sadf、mpstat、iostat、tapestat、pidstat、cifsiostat  和 sa tools 等 。這些工具對於我們收集系統效能資料,比如 CPU 使用率、硬碟和網路吞吐資料,這些資料的收集和分析,有利於我們判斷系統是否正常執行,是提高系統執行效率、安全執行伺服器的得力助手。

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